Faster access to wideband cell resources

Abstract

A user equipment (UE) receives from a radio access network (RAN) node, control information (e.g. downlink control information (DCI)) comprising frequency domain resource allocation (FDRA) mode informa

Description

TECHNOLOGICAL FIELD The present disclosure is related to, but not limited to, bandwidth part (BWP) operation in the context of radio access networks (RANs) as defined by the 3rd Generation Partnership Project (3GPP) standards, such as the 5G standard also referred to as New Radio (NR). In particular, the disclosure pertains to B WP operation in cases when an apparatus such as a user equipment (UE) is operating according to an initial downlink (DL) BWP or an initial uplink (UL) BWP. BACKGROUND Even though the present disclosure is not limited to the 5G standard, and may in particular relate to future 3GPP standards such as 6G etc., the following exemplifications use 5G as a reference, which is to be understood as a non-limiting example, though. According to the present 5G standard, a UE can be configured to communicate with a radio access node on a BWP which is smaller than the cell's full channel bandwidth. For example, the BWPs used for communication between a UE and a radio access node may be configured as follows: The UE, when accessing a network, may acquire a synchronization signal block (SSB) from the radio access node. The SSB may contain a master information block (MIB), which may in turn contain an initial control resource set (CORESET#0) configuration. The CORESET#0 may be used by the UE to infer the initial DL BWP, which may determine the size of downlink control information (DCI) format 10 or 00 in common search space (CSS). A system information block type 1 (SIB 1) received by the UE may define the initial UL BWP for random access procedure. The initial UL BWP may determine resource allocation field size in DCI format 0 0. before the potential application of truncation. When the UE receives SIB1, it may also become aware of the subcarrier spacing (SCS) and carrier bandwidth through SCS-SpecificCarrier, which is the basis for deriving the channel bandwidth (CB W) in UL and DL for the UE. Once radio resource control (RRC) connection is established, the UE can be configured with a maximum of four BWPs in downlink and another four BWPs in uplink, in addition to the initial BWPs. Section 7.3.1.0 of the standardisation document TS 38.212 relates to DCI size alignment in NR. In particular, if DCI format 0_0 is monitored in CSS and if the number of information bits in the DCI format 0_0 prior to truncation is larger than the payload size of the DCI format 10 monitored in CSS for scheduling the same serving cell, the bitwidth of the frequency domain resource assignment field in the DCI format 00 is reduced by truncating the first few most significant bits such that the size of DCI format 0 0 equals the size of the DCI format 10. According to the present 5G standard, UE CB W is determined by the minimum of network carrier bandwidth and the bandwidth defined by the UE capability in the case of a UE with reduced capability (RedCap). The network carrier is configured by means of SCS-SpecificCarrier, according to TS 38.331. The related information is conveyed via SIB1. SUMMARY OF SOME EXEMPLARY EMBODIMENTS However, there is a problem that according to the present 5G standard, the initial DL BWP size is based on CORESET#0 and correspondingly comprises 12 to 96 resource blocks (RBs), whereas the carrier bandwidth can reach up to 275 RBs in NR and will even increase in 6G. Since SIBs are scheduled using CSS which can address only the initial DL BWP, system information can be conveyed only over a narrow part of the frequency spectrum, even if the carrier supports up to 400 MHz bandwidth. This may lead to a reduction of opportunities for network energy saving, because the narrow bandwidth of the initial DL BWP may cause longer transmission times. Conversely, the initial UL BWP, which is configured via SIB 1, can support larger BWPs compared to the initial DL BWP independently of the CORESET#0 bandwidth. However, the scheduling granularity in the initial UL BWP may be increased due to the possible truncation of the frequency’ domain resource assignment field in the DC1 format 00 on CSS, which may lead to restrictions regarding the resource allocation. In view of the above, example embodiments of the present disclosure may have inter alia the effect of enabling faster SIBx delivery and faster access to resources. As used herein, the term “SIBx” is to be understood as any SIB different from SIB1. i.e. x >1. According to a first exemplary aspect, an apparatus is disclosed. The apparatus may be a user equipment (UE). The apparatus may comprise at least one processor and at least one memoiy. The at least one memory' may store instructions that, when executed by the at least one processor, cause the apparatus to perform at least the following: receiving control information from a radio access node of a radio access network, the control information comprising frequency' domain resource allocation. FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode. The apparatus according to the first aspect may be a stationary' device or a mobile device. In particular, the apparatus may be a mobile device, such as a smartphone, a tablet, a wearable, a smartwatch, a low power device, an loT device, an IIoT device, a vehicle, a truck, a drone, an airplane, or the like. The apparatus may in particular be capable of communicating with (transmitting and receiving signals and / or data to / from) one or more other apparatuses. Additionally or alternatively, the apparatus may in particular be capable of communicating with (transmitting and receiving signals and / or data to / from) at least one radio access node of a radio access network. Generally, the apparatus may also be any device enabled for communication with a communication network and / or another apparatus. A radio access node may be understood as a network node used for providing radio access to one or more apparatuses such as one or mode UEs. As an example, the radio access node may be a wireless communication station installed at a fixed or mobile location and may in particular be or comprise an entity of a radio access network of a wireless communication system. For instance, the radio access node may be, comprise, or be part of a base station (BS) of a wireless communication network of any generation (e.g. a gNB, ng-eNB, eNodeB. NodeB, BTS or the like) of a 3GPP standard. Generally, the radio access node may be or comprise a hardware or software component implementing a certain functionality. In an example, the radio access node may be an entity as defined by 3GPP 5G or NR standard (also referred to as gNB). In another example, the radio access node may be an entity as defined by successors of the present 3GPP standards, such as 6G. Accordingly, while the radio access node may be understood to be implemented in or be a single device or module, the radio access node may also be implemented across or comprise multiple devices or modules. As such, tire radio access node may in particular be implemented in or be a stationary device. Multiple radio access nodes may in particular establish a wireless communication system or network, which may in particular be a 5G or 6G system or any other wireless communications system defined by a past or future standard, in particular successors of the present 3 GPP standards. The radio access node may be capable of being in direct and / or indirect communication with other radio access nodes or with an apparatus such as a user equipment. Furthermore, the radio access node may be associated with a respective cell, be associated with a respective physical cell identifier (PCI), and / or be associated with one or more respective transmission and reception points (TRP). As used hereia control information may be understood as any kind of information which schedules a communication between an apparatus and a radio access node. For example, the control information may schedule a communication between the apparatus and the radio access node on a physical downlink shared channel (PDSCH) and / or on a physical uplink shared channel (PUSCH). For example, the control information may schedule the PDSCH and / or the PUSCH for communication between the apparatus and the radio access node. For example, the control information may be or comprise DCI. For example, the DCI may be or comprise DCI format 1 J) or DCI format 0 (). For example, the DCI may be or comprise DCI format 1 J) for DL assignment or DCI format 00 for UL grant. For example, the DCI may be or comprise DCI format 11 or DCI fonnat 01. For example, the DCI may be or comprise DCI format 11 for DL assignment or DCI format 01 for UL grant. For example, the control information may be transmitted via CSS. As used herein, frequency domain resource allocation mode information may be understood as any kind of information based on which it is possible to determine a frequency domain resource allocation (FDRA) mode for communication between an apparatus and a radio access node. For example, the FDRA mode information may be indicative of an FDRA mode. For example, the FDRA mode information may be indicative of a first FDRA mode or a second FDRA mode. As used herein, an FDRA mode may be understood as a mode for which a particular way of assigning resource units in a frequency domain for communication between the apparatus and the radio access node is specified. For example, the resource units may be resource blocks (RBs) or correspond to RBs, where an RB may comprise a set of subcarriers. For example, the resource units may be or correspond to B WPs. For example, the resource units may be or correspond to parts of BWPs. For example, the resource units may be or correspond to channel bandwidths (CBW). For example, the resource units may be or correspond to parts of CBWs. For example, the resource units may be or correspond to a predefined frequency domain resource, such as SCS-SpecificCarrier. For example, the resource units may be or correspond to parts of a predefined frequency domain resource, such as SCS-SpecificCarrier. For example, a first FDRA mode may be a mode for which it is specified that frequency domain resource units are assigned according to CORESET#0. In other words, in the first FDRA mode, the FDRA may be determined according to CORESET#0, for instance according to the frequency location and bandwidth of CORESET#0. For example, the first FDRA mode may be a first FDRA mode forbackward compatibility. For example, the first FDRA mode may be referred to as “legacy” FDRA mode. In the first FDRA mode. FDRA may be defined by two parameters RB Start (first RB of the allocation) and Number of Consecutive RBs within the CORESET#0. The two parameters may be expressed (or coded) as a single value, such as Resource Indicator Value (RIV). For the FDRA according to CORESET#0, frequency domain resource units may comprise only a portion of the frequency domain resource units of the channel bandwidth The granularity of the first FDRA mode may be or correspond to one resource block. For example, a second FDRA mode may be a mode for which it is specified that frequency domain resource units are assigned such that an at least partially different part of a frequency resource is used compared to an assignment according to CORESET#0. For example, for the second FDRA mode, it may be specified that frequency domain resource units are assigned such that a larger part of the frequency resource is used compared to an assignment according to CORESET#0. For example, for the second FDRA mode, it may be specified that frequency domain resource units are assigned such that additional frequency resources, e.g. additional BWPs, are used compared to an assignment according to CORESET#0. For example, for the second FDRA mode, it may be specified that frequency domain resource units are assigned such that an entire channel bandwidth is used. For example, for the second FDRA mode, it may be specified that frequency domain resource units are assigned such that a bandwidth of SCS-SpecificCarrier is used. For example, the second FDRA mode may be a second FDRA mode for faster access to wideband resources. For example, the second FDRA mode may be referred to as “wideband” FDRA mode. As used herein, a system information unit may be understood as a piece of information which specifies a connection between an apparatus and a radio access node. For example, a system information unit may be or comprise information contained in MIB and / or any type of SIB. For example, a system information unit may be or comprise a master information block (MIB). For example, a system information unit may be or comprise a system information block (SIB). For example, a system information unit may be or comprise SIB 1. For example, a system information unit may be or comprise minimum system information for accessing a cell, such as MIB + SIB1, and / or may be or comprise other system information, such as SIB2, SIB3, etc. For example, a system information unit may be or comprise remaining minimum system information for accessing a cell, such as SIB 1, and / or may be or comprise other system information, such as SIB2, SIB3. etc. For example, a system information unit may be or comprise SIBx. As used herein, the term “SIBx” is to be understood as any SIB different from SIBl,i.e. x> 1. In other words, SIBx comprises one or more SIBs except SIB1. For example, SIBx may be or comprise SIB2 to SIBN, where N is a maximum SIB number. For example, N may be a maximum SIB number according to 3 GPP standards. In this context, different types of SIBx may be defined by different values of x. According to the first exemplar^’ aspect, the apparatus may receive control information from a radio access node of a radio access network, the control information comprising frequency domain resource allocation (FDRA) mode information, wherein tire FDRA mode information may be indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource may be used for transmission of the at least one system information unit compared to a first FDRA mode. In example embodiments, transmission of the at least one system information unit may be or relate to subsequent transmission of the at least one system information unit. In this context, the expression “subsequent” may be understood such that one or more transmission events of the at least one system information unit occur after the transmission of the control information by the radio access node. However, the one or more transmission events of the at least one system information unit do not have to occur immediately after tire transmission of the control information, i.e. one or more actions can occur in between, respectively. In example embodiments, one or more transmission events may include the same system information unit, respectively, for each of a plurality’ of system information unit types. In example embodiments, transmission of tire at least one system information unit may be or correspond to transmission of at least one SIBx. In example embodiments, one or more transmission events may include the same SIBx, respectively, for each of a plurality of SIBx types, wherein different SIBx types may be defined by different values of x. In example embodiments, the apparatus may receive the control information as a part of MIBor SIB1. Furthermore, according to the first exemplary’ aspect, the FDRA mode information may be indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource may be used for transmission of the at least one system information unit compared to a first FDRA mode. In this context, the first FDRA mode may be a mode for which it is specified that frequency domain resource units are assigned according to CORESET#0. as defined above. Furthermore, the second FDRA mode may be a mode for which it is specified that frequency domain resource units are assigned such that an at least partially different part of a frequency resource is used compared to an assignment according to CORESET#0, as specified above. In example embodiments, the FDRA mode information may be indicative of whether the first or the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. By the apparatus receiving control information from a radio access node of a radio access network, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein tire FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode, it can be achieved that the apparatus is configured by the radio access node such that the at least one system information unit, such as for example at least one SIBx, can be delivered faster. Titis is because, for example, it can be indicated to the apparatus that the second FDRA mode is used for transmission of the at least one system information unit. Then, by using the second FDRA mode for the actual transmission, for example, a larger part of tire frequency resource can be used, therefore enabling faster delivery. Furthermore, the faster transmission may also allow transmission times to be reduced, and thus may provide opportunities for improved network energy saving. Moreover, faster access to resources, such as for example wideband resources, can be achieved after initial access. Besides this, also the scheduling capabilities of the control information can be improved with only the FDRA mode information as additional overhead. In example embodiments of the first exemplary’ aspect, other functionalities defined for the control information may be maintained. For example, previous and / or existing functionalities defined for DCI format 10 or DCI format 00 transmitted via CSS may be maintained also for the cases when the second FDRA mode is applied. Thereby, it can be achieved that backward compatibility’ is increased. In example embodiments of the first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode; Determining the FDRA mode based on the FDRA mode information is to be understood such that the FDRA mode information is used in any conceivable way to determine the FDRA mode. For example, determining the FDRA mode based on the FDRA mode information may be or comprise reading out the FDRA mode information. In example embodiments, determining that the FDRA mode used by the radio access node for transmission of tire at least one system information unit is the second FDRA mode may be or comprise determining whether the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode. In example embodiments, determining that the FDRA mode used by tire radio access node for transmission of the at least one system information unit is the second FDRA mode may be or comprise determining whether or not the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode. By the apparatus determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode, it can be achieved that the apparatus is enabled to receive the at least one system information unit within a part of the frequency resource according to the second FDRA mode, since it is then known to the apparatus that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode. In example embodiments of the first exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving the at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the second FDRA mode. For example, the at least one system information unit may be received within a BWP according to the second FDRA mode. By the apparatus receiving tire at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the second FDRA mode, it can be achieved that the at least one system information unit, such as for example at least one SIBx, can be delivered faster. This is because, for example, a larger part of the frequency resource can be used, as already explained above. Furthermore, reduced transmission times, which may lead to improved network energy saving, as well as faster access to resources may be achieved. In example embodiments of the first exemplary' aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: if the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode, determining a granularity of the FDRA. For example, a granularity' of an FDRA according to the second FDRA mode may be determined. For example, determining a granularity' of the FDRA may be performed if it has been determined that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode. For example, determining a granularity of the FDRA may be performed in response to determining that the FDRA mode used by the radio access node for transmission of tire at least one system information unit is the second FDRA mode. For example, determining a granularity of the FDRA may comprise or correspond to determining a size of the basic unit that is used for frequency allocation, such as a size of a Resource Block Group (RBG). For example, determining a granularity of the FDRA may comprise or correspond to determining a size of the basic unit that is used for frequency allocation according to the second FDRA mode, such as an RBG size according to the second FDRA mode. By determining a granularity of the FDRA according to the second FRDA mode, it can be achieved that the apparatus is enabled to transmit data to the base station and / or receive data from the base station using the FDRA according to the second FRDA mode. In example embodiments of tire first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining the received system information unit. For example, determining the received system information may comprise decoding and / or unmasking the received system information unit. For example, determining the received system information may be performed using an FDRA. For example, the FDRA may be determined by the apparatus. For example, determining the FDRA may comprise or correspond to determining one or more frequency ranges of the FDRA. For example, determining the FDRA may comprise or correspond to determining a selection of frequency resource blocks of the FDRA. For example, determining the FDRA may comprise or correspond to determining one or more frequency resource block ranges of the FDRA. For example, determining the received system information may be performed using an FDRA according to the second FDRA mode. For example, the FDRA according to the second FDRA mode may be determined by the apparatus. For example, determining the FDRA according to the second FDRA mode may comprise or correspond to determining one or more frequency ranges of the FDRA according to the second FDRA mode. For example, determining the FDRA according to the second FDRA mode may comprise or correspond to determining a selection of frequency resource blocks of the FDRA according to the second FDRA mode. For example, determining the FDRA according to the second FDRA mode may comprise or correspond to determining one or more frequency resource block ranges of the FDRA according to the second FDRA mode. In example embodiments of tire first exemplary aspect, tire first FDRA mode and tire second FDRA mode may be size-aligned. In example embodiments of the first exemplary’ aspect, a DC1 field size of the FDRA field may be determined using the first FDRA mode. In a case where the FDRA field is also used for indicating whether the second FDRA mode is used for transmission of the at least one system information unit, the FDRA field size may be increased by one bit as explained further below. In example embodiments of the first exemplary aspect, an UL and / or DL resource allocation type 1 may be used for the first FDRA mode. For example, in resource allocation type I. a first resource block (RB_Stan) and a number of consecutive RBs within the B WP may be combined into a resource indicator value (RIV). In example embodiments of the first exemplary aspect, an UL and / or DL resource allocation type 0 may be used for tire second FDRA mode. For example, the resource allocation type 0 may be based on resource block groups (RBGs). For example, the nominal RBG size P for an allocation according to the second FDRA mode may be determined as the smallest P satisfying P = 2'. x e N and [(^eP + WF mod P)) / ?] <L wherein the |(« + W mod P)) / p] MSB bits determine the resource allocation, and wherein N^p is the size of the wideband UL and / or DL bandwidth part in number of PRBs, Npw'p1 is the starting PRB of the B WP and L is the size of the FDRA DCI field. In a case where the FDRA field is also used for indicating whether the second FDRA mode is used for transmission of the at least one system information unit, the FDRA field size may be determined as the FDRA DCI field size minus one bit. In example embodiments of the first exemplary aspect, an UL and / or DL resource allocation type 1 may be used for the second FDRA mode. For example, in resource allocation type 1, a first resource block (RB Start) and a number of consecutive RBs within the BWP may be combined into a resource indicator value (RIV). In an embodiment, a first resource block (RBStart) and a number of consecutive RBs within the BWP may be given in multiples of P PRBs, and the largest K e M may be selected satisfying the following relation: V lNs^e / Ns^ze I A I1'1 BWP / BWP,initial! In this embodiment, an additional restriction requiring K = 2X. x 6 N may be applied to restrict P to be a power of 2, to correspond with the definition for scheduling using DCI format 10 and / or 00 in UE-specific search space (USS). In another embodiment, the start may still have a granularity of one PRB and the size of the resource allocation may be in multiples of K PRBs, as applicable for NR DCI format 02 and / or 12. Here, the smallest K e N may be selected satisfying [log2(lV (TV + 1) / 2)1 <L and N = \(Nb^ + mod K)) / k] wherein Nbwp is the size of the wideband UL and / or DL bandwidth part in number of PRBs, Ng^p* is the starting PRB of the BWP and L is the size of the FDRA DCI field. In this embodiment, an additional restriction requiring further K K = 21. x e N may be applied to restrict K to be a power of 2. In example embodiments of the first exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving a synchronization information unit from the radio access node. For example, the synchronization information unit may be or comprise SSB. By receiving a synchronization information unit from the radio access node, it can be achieved that an apparatus is enabled to acquire time and / or frequency synchronization and to determine a master information unit, determine a set of control resources, and / or determine a size of a control information. In example embodiments of the first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining a master information unit. For example, the master information unit may be determined based on the synchronization information unit. For example, the master information unit may be or comprise MIB. By determining a master information unit, it can be achieved that an apparatus is enabled to receive control information, including initial control information, from a radio access node. In example embodiments of the first exemplary’ aspect, the at least one memory’ may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining a set of control resources. For example, the set of control resources may be determined based on the synchronization information unit. For example, the set of control resources may be or comprise a CORESET. For example, the set of control resources may be an initial set of control resources. For example, the initial set of control resources may be or comprise CORESET#0. By determining a set of control resources, it can be achieved that an apparatus is enabled to receive control information, including initial control information, from a radio access node. In example embodiments of the first exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining a size of a control information. For example, the size of the control information may be determined based on the set of control resources. For example, determining a size of a control information may correspond to or comprise determining a size of DCI. For example, determining a size of a control information may correspond to or comprise determining a size of DCI format 10 and / or 00. By determining a size of a control information, it can be achieved that an apparatus is enabled to receive control information, including initial control information, from a radio access node. In example embodiments of the first exemplary’ aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving initial control information from the radio access node. As used herein, initial control information may be or comprise control information based on which an apparatus is enabled to receive scheduling information for an initial system information unit. For example, tire initial system information unit may be or comprise SIB1. For example, the initial control information may be or comprise initial DCI. As used herein, initial DCI may be or comprise DCI based on which an apparatus is enabled to receive scheduling information for SIB 1. For example, the initial DCI may be or comprise DCI format 10. For example, the initial control information may be transmitted via CSS. By receiving initial control information from tire radio access node, it can be achieved that an apparatus is enabled to obtain scheduling information for an initial system information unit. In example embodiments of the first exemplary aspect, the at least one memory’ may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving an initial system information unit from the radio access node. For example, the initial system information unit may be or comprise SIB1. By receiving an initial system information unit from the radio access node, it can be achieved that an apparatus is enabled to access a cell and to obtain inter alia a channel bandwidth used in the cell. In example embodiments of the first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining tire received initial system information unit. For example, determining the received initial system information may comprise decoding and / or unmasking the received system information unit. For example, determining the received initial system information may be performed using an FDRA. For example, the FDRA may be determined by the apparatus. For example, determining the FDRA may comprise or correspond to determining one or more frequency ranges of the FDRA. For example, determining the FDRA may comprise or correspond to determining a selection of frequency resource blocks of the FDRA. For example, determining the FDRA may comprise or correspond to determining one or more frequency resource block ranges of the FDRA. For example, determining the received initial system information may be performed using an FDRA according to the first FDRA mode. For example, the FDRA according to the first FDRA mode may be determined by the apparatus. For example, determining the FDRA according to the first FDRA mode may comprise or correspond to determining one or more frequency ranges of the FDRA according to the first FDRA mode. For example, determining the FDRA according to the first FDRA mode may comprise or correspond to determining a selection of frequency resource blocks of the FDRA according to the first FDRA mode. For example, determining the FDRA according to the first FDRA mode may comprise or correspond to determining one or more frequency resource block ranges of the FDRA according to the first FDRA mode. In example embodiments of the first exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: monitoring the receiving of control information from the radio access node. For example, the receiving of control information from the radio access node may be monitored in a common search space. By monitoring the receiving of control information from the radio access node, it can be achieved that an apparatus is enabled to receive the control information. In example embodiments of the first exemplary aspect, the control information may comprise one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, the control information may comprise one bit indicative of whether the first FDRA mode or the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, a value ‘1’ or ‘true’ of the bit may be indicative of the second FDRA mode and a value ‘0’ or ‘false’ of the bit may be indicative of the first FDRA mode, or vice-versa. For example, the bit may correspond to a predefined signalling state. For example, the FDRA mode information comprised by the control information may be or comprise the one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of at least one system information unit For example, the FDRA mode information may consist of the one bit, i.e. the FDRA mode information may not comprise any other information besides the one bit. For example, the control information may be DCI. For example, the control information may be DCI format 10. For example, the bit comprised by the control information may indicate a triggering of the second FDRA mode. For example, a first bit or a most significant bit (MSB) of the control information may indicate the triggering. For example, the FDRA mode information may be the first bit or MSB. For example, the bit comprised by the control information may be a separate DCI field with a size of one bit included in DCI format 10. For example, the DCI field size may be increased by one bit in DCI format 10. For example, the DCI field size may be increased by one bit in DCI format 10 compared to a previous DCI format 10 which does not comprise the bit. By the control information comprising one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of the at least one system information unit, it can be achieved that the second FDRA mode used by the radio access node for transmission of the at least one system information unit is indicated in a particularly simple and data-efficient way. In particular, compared to control information such as for example DCI format 10 as defined according to the present 5G standard, only a single additional bit is required for triggering the second FDR A mode. In example embodiments of the first exemplary aspect, the control information may be scrambled by a specific temporary identifier in a case where the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. In example embodiments, at least one cyclic redundancy check (CRC) parity bit attached to the control information may be scrambled by a temporary’ identifier which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit. For example, the specific temporary identifier may be a radio network temporary identifier (RNTI). For example, the specific temporary identifier may be an RNTI which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit. For example, at least one CRC parity' bit attached to the control information may be scrambled by a first specific temporary identifier, such as a System Infomiation-RNTI (SI-RNTI), in a case where the first FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, at least one CRC parity' bit attached to tire control information may be scrambled by a second specific temporary identifier in a case where the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, the second specific temporary identifier may be an RNTI specific to the second FDRA mode. For example, the second specific temporary identifier may be referred to as FDRA-RNTI. By scrambling the control information by a temporary identifier which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit, it can be achieved that the FDRA mode information is tacitly conveyed to the UE through the scrambling operation. In example embodiments of the first exemplary aspect, the initial system information unit may be received within a part of the frequency resource according to tire first FDRA mode. For example, the initial system information unit may always be received within a part of the frequency resource according to the first FDRA mode. For example, the apparatus may always assume that the initial system information unit is received within a part of the frequency resource according to the first FDRA mode. For example, the initial system information unit may be received within a part of the frequency resource which is or has been assigned according to CORESET#0. By the initial system information unit being received within a part of the frequency resource according to the first FDRA mode, it can be achieved that the initial system information unit may be obtained by an apparatus based only on a synchronization information unit received from a radio access node, i.e. without knowing SCS-SpecificCarrier. In example embodiments of the first exemplar}’ aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: transmitting data to the radio access node on a physical uplink shared channel (PUSCH) using the second FDRA mode. For example, data may be transmitted to the radio access node on a PUSCH using an FDRA according to the second FDRA mode. For example, the FDRA according to the second FDRA mode may be determined by the apparatus. In example embodiments, control information scheduling the PUSCH may comprise one bit indicative of whether the first FDRA mode or the second FDRA mode is to be used by the apparatus for PUSCH transmission, as described above for transmission of the at least one system information unit by the radio access node. In example embodiments, the control information scheduling the PUSCH may be scrambled by a specific temporary identifier in a case where the second FDRA mode is to be used by the apparatus for PUSCH transmission, as described above for transmission of the at least one system information unit by the radio access node. In this context, (he same second specific temporary identifier may be applied both for scrambling the control information indicating the second FDRA mode for transmission of the at least one system information unit by the radio access node and for scrambling the control information indicating the second FDRA mode for PUSCH transmission by the apparatus. For example, the control information scheduling the PUSCH may be DCI. For example, the control information scheduling the PUSCH may be DCI format 00. For example, the second FDRA mode may be determined by the apparatus based on a value of the one bit comprised by the control conformation scheduling the PUSCH and / or based on the applied scrambling of the control information scheduling the PUSCH, for example based on determining that the control information scheduling the PUSCH is scrambled by a specific temporary identifier. By the apparatus transmitting data to the radio access node on a PUSCH using the second FDRA mode, it can be achieved that data, such as for example user data, is exchanged between the apparatus and tire radio access node using the second FDRA mode. In example embodiments of the first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving data from the radio access node on a physical downlink shared channel (PDSCH) using the second FDRA mode. For example, data may be received from the radio access node on a PDSCH using an FDRA according to the second FDRA mode. For example, the FDRA according to the second FDRA mode may be determined by the apparatus. By the apparatus receiving data from the radio access node on a PDSCH using the second FDRA mode, it can be achieved that data, such as for example user data, is exchanged between the radio access node and the apparatus using the second FDRA mode. In example embodiments of the first exemplary aspect, the initial system information unit may comprise FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node. For example, the FDRA mode usage information may be indicative of whether or not the second FDRA mode is planned to be used by the radio access node for transmission of the at least one system information unit. For example, the FDRA mode usage information may comprise one bit. For example, a value ‘ 1 ’ or ‘true’ of the bit may be indicative of tire second FDRA mode being planned to be used and a value ‘0’ or ‘false’ of the bit may be indicative of the second FDRA mode not being planned to be used, or vice-versa. For example, an apparatus may adjust FFT processing according to the FDRA mode usage information or according to tire received at least one system information unit. For example, the apparatus may adjust FFT processing to an FDRA according to the first FDRA mode, i.e. to an FDRA determined by CORESET#0. Thereby, improved power saving for the apparatus can be achieved. For example, the apparatus may adjust FFT processing to an FDRA according to the second FDRA mode. Thereby, more opportunities for network energy saving can be achieved. For example, the FDRA mode usage information may be indicative of whether or not the second FDRA mode is used for any other apparatus in a coverage area of the radio access node. For example, the FDRA mode usage information may comprise one bit. For example, a value ‘ 1’ or ‘true’ of the bit may be indicative of tire second FDRA mode being used by at least one other apparatus in the coverage area and a value ‘0’ or ‘false’ of the bit may be indicative of the second FDRA mode not being used by any other apparatus in the coverage area, or vice-versa. For example, the FDRA mode usage information may indicate a fraction of apparatuses, such as for example “m out of n” apparatuses, for which the second FDRA mode is used in a coverage are of the radio access node. For example, the FDRA mode usage information may indicate a percentage of apparatuses for which the second FDRA mode is used in a coverage are of the radio access node. For example, a coverage area of tire radio access node may be or correspond to a cell served by the radio access node. By the initial system information unit comprising FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node, an apparatus may obtain information about the usage of the second FDRA mode within the coverage area in a simple and data-efficient way. In example embodiments of the first exemplary aspect, the initial system information unit may comprise resource block information. For example, tire resource block information may be indicative of a starting physical resource bock (PRB) and / or an ending PRB for FDRA according to the second FDRA mode. For example, the resource block information may be indicative of a lowest / starting RB and / or a number of RBs, in particular a lowest / starting PRB and / or a number of PRBs. For example, the resource block information may be indicative of a lowest / starting RB and / or a number of RBs which the UE may assume in fast fourier transform (FFT) processing. For example, the resource block information may be comprised by the FDRA mode usage information. By tire initial system information comprising resource block information, the resource block information being indicative of a starting PRB and / or an ending PRB for FDRA according to the second FDRA mode, power saving of the apparatus may be improved. In example embodiments of the first exemplary' aspect, usage of the second FDRA mode may be limited to the resource blocks of the active BWP. In example embodiments of the first exemplary aspect, usage of the second FDRA mode may be associated with a scheduling offset. For example, a predefined slot offset may be defined for a case in which the second FDRA mode is used. Alternatively or complementary, a larger minimum processing time for the apparatus may be defined for a case in which the second FDRA mode is used. For example, the apparatus may process PDCCH. e.g. for SIB 1, according to a bandwidth defined by CORESET#0, and switch to an FFT processing according to the second FDRA mode only after obtaining an FDRA according to the second FDRA mode. In example embodiments of tire first exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode. Determining the FDRA mode based on the FDRA mode information is to be understood such that the FDRA mode information is used in any conceivable way to determine the FDRA mode. For example, determining the FDRA mode based on the FDRA mode information may be or comprise reading out the FDRA mode information. In example embodiments, determining that the FDRA mode used by the radio access node for transmission of tire at least one system information unit is the first FDRA mode may be or comprise determining whether the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode. In example embodiments, determining that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode may be or comprise determining whether or not the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode. By the apparatus determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode, it can be achieved that the apparatus is enabled to receive the at least one system information unit within a part of the frequency resource according to the first FDRA mode, since it is then known to the apparatus that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode. In example embodiments of the first exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the apparatus to perform the following: receiving the at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the first FDRA mode. For example, the at least one system information unit may be received within a BWP according to the first FDRA mode. For example, the least one system information unit received within a part of the frequency resource according to the first FDRA mode may be referred to as at least one narrowband system information unit. For example, the at least one narrowband system information unit may be at least one narrowband SIB. For example, the at least one narrowband system information unit may be at least one narrowband SIBx. For example, the at least one system information unit may be received within a part of the frequency resource according to the first FDRA mode in a case where the apparatus is not able to receive the at least one system information unit by means of the second FDRA mode. For example, this may be the case if the apparatus does not support the second FDRA mode. For example, this may be the case if the apparatus is an apparatus with reduced capability' (RedCap), such as a RedCap UE, or a low power wide area apparatus, such as a low-power-wide-area (LPWA) UE. In such a case, as an example, the radio access node may use the first FDRA mode for transmission of the at least one system information unit and accordingly, the FDRA mode information may indicate that the first FDRA mode is used by the radio access node for transmission of the at least one system information unit. Accordingly, the apparatus may determine, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode, and may receive the at least one system information unit from the radio access node within a part of the frequency resource according to the first FDRA mode. In example embodiments, the at least one system information unit may be transmitted by the radio access node to the apparatus using dedicated signalling, wherein the apparatus may be a RedCap apparatus or an LPWA apparatus. For example, the at least one system information unit may be received within a part of the frequency resource according to the first FDRA mode in a case where the initial UL and / or DL bandwidth defined by CORESET#0 does not differ significantly from tire carrier bandwidth. For example, the difference between the initial UL and / or DL bandwidth defined by CORESET#0 and the carrier bandwidth may be smaller than a predefined threshold. For example, this may be the case (i) if the apparatus is a RedCap apparatus or an LPWA apparatus, and / or (ii) in a frequency division duplex (FDD) scenario. For example, the FDD scenario may be an FDD scenario with relatively low carrier frequency and narrow CBW. In such a scenario, as a further example, the radio access node may use the first FDRA mode and accordingly, the apparatus may receive the at least one system information unit from the radio access node within a part of the frequency resource according to the first FDRA mode, as previously explained. For example, the at least one system information unit may be received within a part of the frequency resource according to the first FDRA mode in a case where a unicast scenario applies. In such a scenario, for example, the radio access node may be aware of the bandwidth capability of the apparatus. For example, the apparatus may be a RedCap apparatus or an LPWA apparatus. In such unicast scenarios, as a further example, the radio access node may use the first FDRA mode and accordingly, the apparatus may receive the at least one system information unit from the radio access node within a part of the frequency resource according to the first FDRA mode, as previously explained. By tire apparatus receiving the at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the first FDRA mode, it can be achieved that the at least one system information unit is obtained by the apparatus using the first FDRA mode. According to the first exemplary' aspect, a respective method is disclosed, too. The method according to the first exemplary aspect may be performed by an apparatus. The apparatus may be a user equipment. The method may comprise at least tire following: receiving control information from a radio access node of a radio access network, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode. Within the first exemplary aspect, the disclosure of any instruction that, when executed by the at least one processor of the apparatus, causes the apparatus to perform an action or step shall also be considered as a disclosure of a respective action or step of the method. Furthermore, the disclosure of any example or example embodiment of the apparatus shall also be considered as a respective example or example embodiment of the method. According to the first exemplary aspect, a respective apparatus comprising respective means for performing respective steps of a method according to the first exemplary aspect is disclosed, too. The apparatus may be a user equipment. Within the first exemplary aspect, the disclosure of any method action or step shall also be considered as a disclosure of means for performing the respective method action or step. Likewise, the disclosure of any means for performing a method action or step shall also be considered as a disclosure of the method action or step itself. The means or functionality of the apparatus according to the first exemplary' aspect can be implemented in hardware and / or software. They may comprise one or multiple modules or units providing the respective functionality. They may for instance comprise at least one processor for executing instructions for performing the required functions, at least one memory storing the instructions, or both. Alternatively, they could comprise for instance circuitry that is designed to implement the required functions, for instance implemented in a chipset or a chip, like an integrated circuit. In general, the means may comprise for instance one or more processing means or processors. According to the first exemplary aspect, a respective computer-readable medium is disclosed, too. The computer-readable medium may be non-trarrsitory. The computer-readable medium according to the first exemplary aspect may comprise program instructions that, when executed by an apparatus, cause the apparatus to perform at least a method according to the first exemplary aspect. The apparatus may be a user equipment. The computer-readable medium according to the first exemplary aspect could for example be a disk or a memory or the like. The program instructions could be stored in the computer-readable medium in the form of instructions encoding the computer-readable medium. The computer-readable medium may be intended for taking part in the operation of a device, like an internal or external memory, for instance a read-only memory' (ROM) or hard disk of a computer, or be intended for distribution of the program, like an optical disc. According to the first exemplary aspect, a respective computer program is disclosed, too. The computer program according to the first exemplary aspect may comprise instructions which, when executed by an apparatus, cause the apparatus to at least perform a method according to the first exemplary aspect. The apparatus may be a user equipment. The computer program according to the first exemplaiy aspect may be stored on a computer-readable storage medium, in particular a tangible and / or non-transitory computer-readable storage medium. In particular, the computer program according to the first exemplary aspect may be stored on a non-transitory computer-readable medium according to the first exemplary aspect. According to a second exemplary aspect, a radio access node of a radio access network is disclosed. The radio access node may comprise at least one processor and at least one memory. The at least one memory may store instructions that, when executed by the at least one processor, cause the radio access node to perform at least the following: transmitting control information to an apparatus, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of tire at least one system information unit compared to a first FDRA mode. Thereby, it can be achieved that the at least one system information unit, such as for example at least one SIBx, can be delivered faster. This is because, for example, a larger part of the frequency resource can be used, as already explained in the context of the first exemplary aspect. Furthermore, reduced transmission times, which may lead to improved netu ork energy saving, as well as faster access to resources may be achieved. Besides this, also the scheduling capabilities of the control information can be improved with only the FDRA mode information as additional overhead, as also already explained in the in the context of the first exemplary' aspect. Within the present disclosure, any example or example embodiment disclosed in connection with the first exemplary aspect shall also be considered analogously as a respective example or example embodiment in comiection with the second exemplary' aspect. In example embodiments of the second exemplary' aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to the second FDRA mode. For example, the at least one system information unit may be transmitted within a BWP according to the second FDRA mode. By the radio access node transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to tire second FDRA mode, it can be achieved that the at least one system information unit, such as for example at least one SIBx, can be delivered faster, as already explained in the context of the first exemplary aspect. Furthermore, reduced transmission times, which may lead to improved network energy saving, as well as faster access to resources may be achieved. In example embodiments of the second exemplary' aspect, the at least one memory may further store instractions that, when executed by the at least one processor, cause the radio access node to perform the following: generating the control information. For example, the control information may be generated as DCI format 0 0 and / or DCI format 10. By generating the control information, it can be achieved that the control information is obtained by the radio access node for the purpose of being transmitted to the apparatus. In example embodiments of the second exemplar}’ aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting a synchronization information unit to the apparatus. For example, the synchronization information unit may be or comprise SSB. By transmitting a synchronization information unit to the apparatus, it can be achieved that the apparatus is enabled to acquire time and / or frequency synchronization and to determine a master information unit, determine a set of control resources, and / or determine a size of a control information, as already explained in the context of the first exemplary’ aspect. In example embodiments of the second exemplary aspect, the at least one memoiy may further store instructions that, when executed by the at least one processor, cause tire radio access node to perform the following: transmitting initial control information to the apparatus. As used herein, initial control information may be or comprise control information based on which an apparatus is enabled to receive scheduling information for an initial system information unit. For example, the initial system information unit may be or comprise SIB1. For example, the initial control information may be or comprise initial DCI. As used herein, initial DCI may be or comprise DCI based on which an apparatus is enabled to receive scheduling information for SIB1. For example, the initial DCI may be or comprise DCI fonnat 10. For example, the initial control information may be transmitted via CSS. By transmitting initial control information to the apparatus, it can be achieved that the apparatus is enabled to obtain scheduling information for an initial system information unit, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the at least one memoiy may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting an initial system information unit to the apparatus. For example, the initial system information unit may be or comprise SIB 1. By transmitting an initial system information unit to the apparatus, it can be achieved that the apparatus is enabled to access a cell and obtain inter alia a channel bandwidth used in the cell, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the control information may comprise one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, the control information may comprise one bit indicative of whether the first FDRA mode or the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, a value ‘1’ or ‘true’ of the bit may be indicative of the second FDRA mode and a value ‘0’ or ‘false’ of the bit may be indicative of the first FDRA mode, or vice-versa. For example, the FDRA mode information comprised by the control information may be or comprise the one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of at least one system information unit. For example, the FDRA mode information may consist of the one bit, i.e. the FDRA mode information may not comprise any other information besides the one bit. For example, the control information may be DCI. For example, the control information may be DCI format 10. For example, the bit comprised by the control information may indicate a triggering of the second FDRA mode. For example, a first bit or a most significant bit (MSB) of the control information may indicate the triggering. For example, the FDRA mode information may be the first bit or MSB. By the control information comprising one bit indicative of whether the second FDRA mode is used by tire radio access node for transmission of the at least one system information unit, it can be achieved that the second FDRA mode used by the radio access node for transmission of the at least one system information unit is indicated in a particularly simple and data-efficient way, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the control information may be scrambled by a specific temporary identifier in a case where the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. In example embodiments, at least one cyclic redundancy check (CRC) parity bit attached to the control information may be scrambled by a temporary identifier which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit. For example, the specific temporary identifier may be a radio network temporary identifier (RNTI). For example, the specific temporary identifier may be an RNTI which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit. For example, at least one CRC parity bit attached to the control information may be scrambled by a first specific temporary identifier, such as a System Information-RNTI (SI-RNTI), in a case where the first FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, at least one CRC parity bit attached to the control information may be scrambled by a second specific temporaiy identifier in a case where the second FDRA mode is used by the radio access node for transmission of the at least one system information unit. For example, the second specific temporary identifier may be an RNTI specific to the second FDRA mode. For example, the second specific temporary identifier may be referred to as FDRA-RNTI. By scrambling the control information by a temporaiy' identifier which is specific to the FDRA mode used by the radio access node for transmission of the at least one system information unit, it can be achieved that the FDRA mode information is tacitly conveyed to the UE through the scrambling operation, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the initial system information unit may be transmitted within a part of the frequency resource according to the first FDRA mode. For example, the initial system information unit may always be transmitted within a part of the frequency resource according to the first FDRA mode. For example, the initial system information unit may be transmitted within a part of the frequency’ resource which is or has been assigned according to CORESET#0. By the initial system information unit being transmitted within a part of the frequency resource according to the first FDRA mode, it can be achieved that the initial system information unit may be obtained by an apparatus based only on a sy nchronization information unit transmitted by a radio access node, as already explained in the context of the first exemplary' aspect. In example embodiments of the second exemplar}’ aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: receiving data from the apparatus on a physical uplink shared channel (PUSCH) using the second FDRA mode. For example, data may be received from the apparatus on a PUSCH using an FDRA according to the second FDRA mode. In example embodiments, control information scheduling the PUSCH may comprise one bit indicative of whetlier the first FDRA mode or the second FDRA mode is to be used by the apparatus for PUSCH transmission, as described above for transmission of the at least one system information unit by the radio access node. In example embodiments, the control information scheduling the PUSCH may be scrambled by a specific temporary identifier in a case where the second FDRA mode is to be used by the apparatus for PUSCH transmission, as described above for transmission of the at least one system information unit by tire radio access node. In this context, the same second specific temporary’ identifier may be applied both for scrambling the control information indicating the second FDRA mode for transmission of the at least one system information unit by the radio access node and for scrambling the control information indicating the second FDRA mode for PUSCH transmission by the apparatus. For example, the control information scheduling the PUSCH may be DCI. For example, the control information scheduling the PUSCH may be DCI format 00. By the radio access node receiving data from the apparatus on a PUSCH using the second FDRA mode, it can be achieved that data, such as for example user data, is exchanged between the apparatus and the radio access node using the second FDRA mode, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the at least one memory may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting data to the apparatus on a physical downlink shared channel (PDSCH) using the second FDRA mode. For example, data may be transmitted to the apparatus on a PDSCH using an FDRA according to the second FDRA mode. By the radio access node transmitting data to the apparatus on a PDSCH using the second FDRA mode, it can be achieved that data, such as for example user data, is exchanged between the radio access node and the apparatus using the second FDRA mode, as already explained in the context of the first exemplary aspect. In example embodiments of the second exemplary aspect, the initial system information unit may comprise FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node. For example, the FDRA mode usage information may be indicative of whetlier or not the second FDRA mode is planned to be used by the radio access node for transmission of the at least one system information unit. For example, the FDRA mode usage information may be indicative of whether or not the second FDRA mode is used for any other apparatus in a coverage area of the radio access node. For example, a coverage area of the radio access node may be or correspond to a cell served by the radio access node. By the initial system information unit comprising FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node, an apparatus may obtain information about the usage of the second FDRA mode within the coverage area in a simple and data-efficient way, as already explained in the context of the first exemplary' aspect. In example embodiments of the second exemplary aspect, the at least one memory' may further store instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to the first FDRA mode. For example, the at least one system information unit may be transmitted w ithin a BWP according to the first FDRA mode. For example, the least one system information unit transmitted within a part of the frequency resource according to the first FDRA mode may be referred to as at least one narrowband system information unit. For example, the at least one narrowband system information unit may be at least one narrowband SIB. For example, the at least one narrowband system information unit may be at least one narrowband SIBx. For example, the at least one system information unit may be transmitted within a part of the frequency resource according to the first FDRA mode in a case where the apparatus is not able to receive the at least one system information unit by means of the second FDRA mode, as already explained in the context of the first exemplary aspect. For example, the at least one system information unit may be transmitted within a part of the frequency resource according to the first FDRA mode in a case where the initial UL and / or DL bandwidth defined by CORESET#0 does not differ significantly from the carrier bandwidth, as also already explained in the context of the first exemplary aspect. For example, the at least one system information unit may be transmitted within a part of the frequency resource according to the first FDRA mode in a case where a unicast scenario applies, as also already explained in the context of the first exemplary aspect. By the radio access node transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to the first FDRA mode, it can be achieved that the at least one system information unit is obtained by the apparatus using the first FDRA mode. In example embodiments of the second exemplary’ aspect, the radio access node may dynamically select the FDRA mode used for transmission of the at least one system information unit. In this context, dynamically selecting the FDRA mode may be understood such that the radio access node may sw itch between the first and the second FDRA mode, or vice-versa. For example, the first FDRA mode may, e.g. always, be used for PDSCH for SIB1. For example, the first or the second FDRA mode may be dynamically selected for PDSCH for SIB2 to SIBN. For example, the first or the second FDRA mode may be dynamically selected for unicast PDSCH. For example, the first or the second FDRA mode may be dynamically selected for PUSCH. According to the second exemplary aspect, a respective method is disclosed, too. The method according to the second exemplary aspect may be performed by a radio access node of a radio access network. The method may comprise at least the following: transmitting control information to an apparatus, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode. Within the second exemplary aspect, the disclosure of any instruction that, when executed by the at least one processor of the radio access node, causes the radio access node to perform an action or step shall also be considered as a disclosure of a respective action or step of the method. Furthermore, the disclosure of any example or example embodiment of the radio access node shall also be considered as a respective example or example embodiment of the method. According to the second exemplary aspect, a respective apparatus is disclosed, too. The apparatus according to the second exemplary aspect may comprise respective means for performing respective steps of a method according to the second exemplary aspect. Within the second exemplary aspect, the disclosure of any method action or step shall also be considered as a disclosure of means for performing the respective method action or step. Likewise, the disclosure of any means for performing a method action or step shall also be considered as a disclosure of the method action or step itself. The apparatus according to the second exemplary aspect may be a radio access node. The means or functionality' of the radio access node according to the second exemplary aspect can be implemented in hardware and / or software. They may comprise one or multiple modules or units providing the respective functionality. They may for instance comprise at least one processor for executing instructions for performing the required functions, at least one memory storing the instructions, or both. Alternatively, they could comprise for instance circuitry that is designed to implement the required functions, for instance implemented in a chipset or a chip, like an integrated circuit. In general, the means may comprise for instance one or more processing means or processors. According to tire second exemplary’ aspect, a respective computer-readable medium is disclosed, too. The computer-readable medium may be non-transitory. The computer-readable medium according to the second exemplary aspect may comprise program instructions that, when executed by a radio access node, cause the radio access node to perform at least a method according to the second exemplary’ aspect. The computer-readable medium according to the second exemplary aspect could for example be a disk or a memory or the like. The program instructions could be stored in the computer-readable medium in tire form of instructions encoding the computer-readable medium. The computer-readable medium may be intended for taking part in the operation of a device, like an internal or external memory, for instance a read-only memory (ROM) or hard disk of a computer, or be intended for distribution of the program, like an optical disc. According to the second exemplary aspect, a respective computer program is disclosed, too. The computer program according to the second exemplary aspect may comprise instructions which, when executed by a radio access node, cause the radio access node to at least perform a method according to the second exemplary aspect. The computer program according to the second exemplary aspect may be stored on a computer-readable storage medium, in particular a tangible and / or non-transitory computer-readable storage medium. In particular, the computer program according to the second exemplary aspect may be stored on a non-transitoiy computer-readable medium according to the second exemplary aspect. It is to be understood that the presentation of the embodiments disclosed herein is merely by way of examples and non-limiting. Other features of the present disclosure will become apparent from the following detailed description considered in conjunction with the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the present disclosure, for which reference should be made to the appended claims. It should be further understood that the drawings are not drawn to scale and that they are merely intended to conceptually illustrate the structures and procedures described herein. BRIEF DESCRIPTION OF THE FIGURES Some example embodiments will now be described with reference to the accompanying drawings in which FIG. 1 shows, in a signalling flow chart, an example embodiment of a method according to the present disclosure; FIG. 2 shows, in a data flow chart, an example embodiment of a method according to the first exemplary aspect of the present disclosure; FIG. 3 shows an example of an FDRA scenario according to the present disclosure; FIG. 4 shows, in a flow chart, another example embodiment of a method according to the first exemplars aspect of the present disclosure; FIG. 5 shows, in a schematic block diagram, an example embodiment of an apparatus according to the first aspect of the present disclosure; and FIG. 6 shows, in a schematic illustration, examples of tangible and non-transitory computer-readable storage media; DETAILED DESCRIPTION OF THE FIGURES The following description serves to deepen the understanding of the present disclosure and shall be understood to complement and be read together with the description of example embodiments of the present disclosure as provided in the above SUMMARY section of this specification. While the examples below may use 5G as a reference, this is to be considered (e.g. only) as a non-limiting example, and any next generation systems or standards above and beyond 5G are also considered. In the following and with reference to FIG. 1, an example embodiment of a method 100 according to the present disclosure is shown in a signalling flow chart. More specifically, the succession of actions and / or steps between an apparatus 101 and a radio access node 102 is shown. In this non-limiting example, the apparatus 101 is a user equipment 101. Furthermore, in this non-limiting example, where 5G is used only as a reference, the radio access node 102 is a gNodeB (gNB) 102. Furthermore, UE 101 is served by a serving cell associated with gNB 102 in this example. Within action 110. UE 101 receives an SSB, as a non-limiting example of a synchronization information unit according to the present disclosure, from gNB 102. Within action 115, UE 101 determines a MIB, which is a non-limiting example of a master information unit according to the present disclosure. Furthermore. UE 101 determines CORESET#0, which is a non-limiting example of a set of control resources according to the present disclosure. Furthermore, UE 101 determines a size of DCI format 10 and 00, which is a non-limiting example of a size of a control information according to the present disclosure. Within action 120, UE 101 receives DCI format 10 by means of PDCCH in CSS associated with CORESET#0 to receive scheduling information for SIB 1. Here. DCI format 1 J) is a non-limiting example of initial control information according to the present disclosure. In an embodiment, UE 101, receiving PDCCH for SIB1 and having no information on the SCS-SpecificCarrier may always assume that the first FDRA mode is used for SIB 1 transmission, i.e. that SIB 1 is transmitted from gNB 102 to UE 101 within a part of the frequency resource assigned according to CORESET#0. Within action 125, UE 101 receives SIB1, as a non-limiting example for an initial system information unit according to the present disclosure, from gNB 102. In this example, SIB 1 is transmitted from gNB 102 to UE 101 within a part of the frequency resource assigned according to CORESETO. In other words. SIB1 is transmitted according to a first FDRA mode according to the present disclosure. Furthermore, SIB 1 in this nonlimiting example comprises FDRA mode usage information, and more specifically indicates a percentage of apparatuses which use the second FDRA mode within the cell served by the gNB 102. Within action 130, UE 101 detennines SIB 1. and obtains information of SCS-SpecificCarrier, initial BWP and scheduling information of other SIBs, i.e. for SIBs except SIB1. Within action 135. UE 101 monitors DCI format 10, which is scrambled by system information RNTI (SI-RNTI) in this example, for SIBx according to the scheduling information obtained within action 130. In this specific example, the use of SI-RNTI may be restricted to the first FDRA mode. Within action 140, gNB 102 prepares DCI format I J) including an indication of whether a first FDRA mode or a second FDRA mode is used for SIBx transmission. Here, the indication is a single FDRA mode bit, as a non-limiting example for FDRA mode information according to the present disclosure. In this example, if the FDRA mode bit is set to a value of ‘O’, this indicates that a part of the frequency resource assigned according to CORESET#0 is used for transmission of SIBx. In other words, the value ‘0’ indicates that a first FDRA mode according to the present disclosure is used for SIBx transmission. Furthermore, if the FDRA mode bit is set to a value of T, this indicates that a larger part of the frequency resource is used for transmission of SIBx compared to the first FDRA mode. In other words, the value ‘ 1 ’ indicates that a second FDRA mode according to the present disclosure is used for SIBx transmission. In this example, additional BWPs are used for SIBx transmission in tire second FDRA mode compared to an assignment according to CORESET#0. Within action 145, DCI fonnat 10 including the FDRA mode bit is transmitted by tire gNB 102 in CSS associated with CORESET#0. Here, DCI format 10 is an example of control information according to the present disclosure. In this specific example, DCI format 1 J) is scrambled by an RNTI specific to the second FDRA mode, which is exemplarily referred to as FDRA-RNTI. By the transmission of DCI format 10 including the FDRA mode bit from the gNB 102 to the UE 101, it can be achieved in the specific non-limiting example described that the UE 101 is configured such that at least one SIBx can be delivered faster. More specifically, it can be indicated to the UE 101 that the second FDRA mode is used for transmission of the at least one SIBx, which then allows a larger part of the frequency resource to be used for the SIBx transmission, and thus enables faster SIBx delivery. This may also allow a reduction of transmission times, and accordingly an improvement in network energy saving, as well as faster access to resources. As illustrated in this non-limiting example, only a single bit comprised by DCI is necessary as additional data overhead for configuring the second FDRA mode. Within action 150, UE 101 determines, based on the FDRA mode bit, that the FDRA mode used for SIBx transmission by the gNB 102 is the second FDRA mode. Here, UE 101 reads out the FDRA mode bit. which is set to ’ 1’ in this non-limiting example, and thus determines accordingly that the second FDRA mode is used for SIBx transmission. Within action 155, gNB 102 transmits SIBx to UE 101 according to the second FDRA mode, i.e. using a larger part of the frequency resource compared to an assignment according to CORESET#0. Within action 160, UE 101 determines the SIBx received from the base station 102 within action 155. In an embodiment not shown, the FDRA mode bit may be set to ‘0’ and accordingly, UE 101 may determine that the first FDRA mode is used for SIBx transmission by gNB 102. Furthermore, gNB 102 may transmit SIBx to UE 101 according to the first FDRA mode. For example, UE 101 may be a RedCap UE or an LPWA UE in tins specific embodiment not shown. Turning now to FIG. 2. a data flow chart of an example embodiment of a method 200 according to the first exemplary aspect of the present disclosure is shown. More specifically, the succession of actions and / or steps performed by an apparatus according to the first exemplary aspect is shown. In this non-limiting example, the apparatus is a UE. W ithin action 210, UE receives SSB, determines MIB. determines CORESET#0, and determines size of DCI format 10 and 0(). Within action 215. UE receives DCI format 10 by means of PDCCH in CSS associated with CORESET#0. Furthermore, UE receives SIB1, determines SIB1, gets information of SCS-SpecificCarrier, initial BWP, and scheduling information of other SIBs. Within action 220, UE monitors DCI format 1 J) and 0 0 in CSS. Action 225 is performed by UE after receiving DCI comprising an FDRA mode information. Within action 225, UE determines whether the received DCI is in format 0 0 or format 10. Action 230 is performed by UE after determining that the received DCI is in format 10. Within action 230, UE determines whether the FDRA mode information contained in DCI format 1 J) indicates a first FDRA mode with a part of the frequency resource assigned according to CORESET#0 for SIBx transmission or a second FDRA mode with additional BWPs for SIBx transmission. Action 240 is performed by UE after determining that the FDRA mode information indicates the first FDRA mode. Within action 240, UE determines FDRA and determines granularity of the FDRA. In this example, FDRA with default granularity is determined according to the first FDRA mode. Action 245 is performed by UE after determining that the FDRA mode information indicates the second FDRA mode. Within action 245, UE determines FDRA and determines granularity of the FDRA. In this example, FDRA with larger granularity’ is determined according to the second FDRA mode. Within action 250, UE receives PDSCH (e.g., conveying SIBx) using the determined FDRA according to the first or second FDRA mode, respectively. Action 260 is performed by UE after determining that the received DO is in format 00. Within action 260, UE determines whether the FDRA mode information contained in DCI format 0 0 indicates the first FDRA mode or the second FDRA mode. Action 270 is performed by UE after determining that the FDRA mode information indicates the first FDRA mode. Within action 270. UE determines FDRA and determines granularity of the FDRA. In this example. FDRA with default granularity is determined according to the first FDRA mode. Action 275 is performed by UE after determining that the FDRA mode information indicates the second FDRA mode. Within action 275, UE determines FDRA and determines granularity of the FDRA. In this example, FDRA with larger granularity' is determined according to tire second FDRA mode. Within action 280. UE transmits PUSCH using the determined FDRA according to the first or second FDRA mode, respectively. Turning now to FIG. 3, an example of an FDRA scenario according to the present disclosure is shown. To this end, FIG. 3 shows RBs 310a. 310b, 310c, ... in the frequency resource together with a bandwidth 320 of SCS-SpecificCarrier as well as an initial DL BWP 330. In tire example of FIG. 3, subcarrier spacing is 30 kHz. For the initial DL BWP 330. location is determined based on SSB and MIB, and size is determined based on MIB as 48 RBs, corresponding to 17.28 MHz. Conversely, bandwidth 320 of SCS-SpecificCarricr is 273 RBs. corresponding to 98.28 MHz, in a predefined location in frequency. Then, considering the first FDRA mode with resource allocation type 1, the expression li„„ (\,dl,bwb r^DL.BWB , dy / Qyi yields 11 bits for NBg’BWB = 48. For the second FDRA mode with resource allocation ty pe 1 and likewise 11 bits, the resulting RBG size is 273 divided by 48, rounded to the next higher integer, i.e. 6 RBs. This value may be increased to 8 RBs in order to obtain a power of 2. Turning now to FIG. 4, a flow chart of an example embodiment of a method according to the first exemplary aspect is shown. The method 400 is performed by an apparatus. In this non-limiting example, the apparatus is a UE. Within action 410. control information is received from a radio access node of a radio access network, the control information comprising frequency domain resource allocation (FDRA) mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency' resource is used for transmission of the at least one system information unit compared to a first FDRA mode. Action 420 is not mandatory for realising a method according to the first exemplary aspect. Within action 420, it is determined, based on the FDRA mode information, that the FDRA mode used by tire radio access node for transmission of the at least one system information unit is the second FDRA mode. Action 430 is not mandator, for realising a method according to the first exemplary' aspect. Within action 430, the at least one system information unit is received from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the second FDRA mode. FIG. 5 is a block diagram of an example embodiment of an apparatus 500 according to the first aspect of the present disclosure. For instance, apparatus 500 may be configured for performing actions of one or more of the embodiments of a method according to the present disclosure, such as the embodiments of a method explained in the context of FIG. 1, FIG. 2 and FIG. 4. Apparatus 500 comprises a processor 501. Processor 501 may represent a single processor or two or more processors, which are for instance at least partially coupled, for instance via a bus. Processor 501 executes instructions stored in program memory 502 (for instance instructions causing apparatus 500 to perform alone and / or together with a radio access node, one or more of the embodiments of a method according to the present disclosure or parts thereof, when executed on processor 501), and interfaces with a main memory 503. Program memory 502 may also comprise an operating system for processor 501. Some or all of memories 502 and 503 may also be included into processor 501. Program memory 502 and main memory 503 may be formed by a single memoiy . Moreover, processor 501 may control a communication interface 504 which is for example configured to communicate according to a communication system like a 3GPP communication system. Communication interface 504 of apparatus 500 may be realized by one or more network interfaces for instance. The components 502, 503 and 504 of apparatus 500 may for instance be connected with processor 501 by means of one or more serial and / or parallel busses. It is to be understood that apparatus 500 may comprise various other components. FIG. 6 is a schematic illustration of examples of tangible and non-transitory computer-readable storage media according to the present disclosure that may for instance be used to implement memoiy’ 502 of FIG. 5. To this end, FIG. 6 displays a flash memory 600, which may for instance be soldered or bonded to a printed circuit board, a solid-state drive 601 comprising a plurality of memory chips (e.g. Flash memory chips), a magnetic hard drive 602, a Secure Digital (SD) card 603, a Universal Serial Bus (USB) memory’ stick 604, an optical storage medium 605 (such as for instance a CD-ROM or DVD) and a magnetic storage medium 606. Any presented connection in the described embodiments is to be understood in a way that the involved components are operationally coupled. Thus, the connections can be direct or indirect with any number or combination of intervening elements, and there may be merely a functional relationship between the components. Further, as used in this text, the term ‘circuitry’ refers to any of the following: (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry); (b) combinations of circuits and software (and / or firmware), such as: (i) a combination of processor(s), or (ii) sections of processor(s) / software (including digital signal processor(s)). software, and memory(ies) that work together to cause an apparatus, such as a mobile phone, to perform various functions); and (c) circuits, such as a microprocessor s) or a section of a microprocessors). that require software or firmware for operation, even if the software or firmware is not physically present. This definition of ‘circuitry’ applies to all uses of this term in this text, including in any claims. As a further example, as used in this text, the term ‘circuitry’ also covers an implementation of merely a processor (or multiple processors) or section of a processor and its (or their) accompanying software and / or firmware. The term ‘circuitry’ also covers, for example, a baseband integrated circuit or applications processor integrated circuit for a mobile phone. Any of the processors mentioned in this text, in particular but not limited to processor 501 of FIG. 5, could be a processor of any suitable type. Any processor may comprise but is not limited to one or more microprocessors, one or more processor(s) with accompanying digital signal processor(s), one or more processor(s) without accompanying digital signal processor / s), one or more special-purpose computer chips, one or more field-programmable gate arrays (FPGAS), one or more controllers, one or more application-specific integrated circuits (ASICS), or one or more computer(s). The relevant structure / hardware lias been programmed in such a way to carry out the described function. Moreover, any of the actions or steps described or illustrated herein may be implemented using executable instructions in a general-purpose or special-purpose processor and stored on a computer-readable storage medium (e.g. disk, memoiy. or the like) to be executed by such a processor. References to ‘computer-readable storage medium’ should be understood to encompass specialized circuits such as FPGAs, ASICs, signal processing devices, and other devices. As used herein, “at least one of the following: ” and “at least one of ” and similar wording, where the list of two or more elements are joined by “and” or “or”, mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements. The wording “A. or B, or C, or a combination thereof’ or “at least one of A. B and C” may be rmderstood to be not exhaustive and to include at least the following: (i) A. or (ii) B, or (iii) C, or (iv) A and B, or (v) A and C, or (vi) B and C, or (vii) A and B and C. 5 It will be understood that the embodiments disclosed herein are only exemplary, and that any feature presented for a particular exemplary embodiment may be used with any aspect of the present disclosure on its own or in combination with any feature presented for the same or another particular exemplary embodiment and / or in combination with any other feature not mentioned. It will further be understood that any feature presented for an example embodiment in a particular category may also be used in a corresponding manner in an example 10 embodiment of any other category. ABBREVIATIONS #0 3 GPP Initial 3rd Generation Partnership Project 15 BS Base Station BWP Bandwidth Part CBW Channel Bandwidth CORESET Control Resource Set CSS Common Search Space 20 DCI Downlink Control Information DL Downlink FDRA Frequency Domain Resource Allocation FFT Fast Fourier Transform gNB gNodeB 25 LPWA Low Power Wide Area MIB Master Information Block MSB Most Significant Bit NR New Radio PDSCH Physical Downlink Shared Channel 30 PRB Physical Resource Block PUS CH Physical Uplink Shared Channel RAN Radio Access Network RB Resource Block RBG Resource Block Group 35 RedCap Reduced Capability RNTI Radio Network Temporary Identifier RRC Radio Resource Control scs Subcarrier Spacing SIB System Information Block SSB Synchronization Signal Block UE User Equipment UL Uplink USS UE-specific Search Space

Claims

1. An apparatus comprising at least one processor and at least one memory, the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least the following:receiving control information from a radio access node of a radio access network, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode.

2. The apparatus according to claim 1, the at least one memon further storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following: determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode; receiving the at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of the frequency resource according to the second FDRA mode.

3. The apparatus according to claim 2, the at least one memory further storing instructions that, when executed by the at least one processor, cause tire apparatus to perform at least one of the following:if the FDRA mode used by the radio access node for transmission of the at least one system information unit is the second FDRA mode, determining a granularity of the FDRA;determining the received system information unit.

4. The apparatus according to one of claims 1 to 3, the at least one memory further storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following:receiving a synchronization information unit from the radio access node;determining a master information unit;determining a set of control resources;determining a size of a control information5. The apparatus according to one of claims 1 to 4, the at least one memory further storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following:receiving initial control information from the radio access node;receiving an initial system information unit from the radio access node;determining the received initial system information unit;monitoring the receiving of control information from the radio access node.

6. The apparatus according to one of claims 1 to 5, wherein the control information comprises one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of the at least one system information unit.

7. The apparatus according to one of claims 1 to 6, wherein the control information is scrambled by a specific temporary identifier in a case where the second FDRA mode is used by the radio access node for transmission of tire at least one system information unit.

8. The apparatus according to one of claims 5 to 7, wherein the initial system information unit is received within a part of the frequency resource according to the first FDRA mode.

9. The apparatus according to one of claims 2 to 8, the at least one memory further storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following:transmitting data to the radio access node on a physical uplink shared channel, PUSCH, using the second FDRA mode;receiving data from the radio access node on a physical downlink shared channel, PDSCH, using the second FDRA mode.

10. The apparatus according to one of claims 5 to 9, wherein the initial system information unit comprises FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node.

11. The apparatus according to one of claims 1 to 10, the at least one memory further storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least one of the following:determining, based on the FDRA mode information, that the FDRA mode used by the radio access node for transmission of the at least one system information unit is the first FDRA mode;receiving the at least one system information unit from the radio access node, wherein the at least one system information unit is received within a part of tire frequency resource according to the first FDRA mode.

12. A method performed by an apparatus, the method comprising at least the following:receiving control information from a radio access node of a radio access network, the control information comprising frequency' domain resource allocation, FDRA, mode information, whereinthe FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode.

13. A non-transitory computer-readable medium comprising program instructions which, when executed by an apparatus, cause the apparatus to perform at least the following:receiving control information from a radio access node of a radio access network, the control information comprising frequency domain resource allocation, FDRA, mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit wherein, in tire second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode.

14. A radio access node of a radio access network, the radio access node comprising at least one processor and at least one memory, the at least one memory storing instructions that, when executed by the at least one processor, cause the radio access node to perform at least the following:transmitting control information to an apparatus, the control information comprising frequency domain resource allocation, FDRA. mode information, wherein the FDRA mode information is indicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode.

15. The radio access node according to claim 14, the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform the following: transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to the second FDRA mode.

16. The radio access node according to claim 14 or 15. the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform the following: generating the control information.

17. The radio access node according to one of claims 14 to 16, the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform the following:transmitting a synchronization information unit to the apparatus.

18. The radio access node according to one of claims 14 to 17, the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform at least one of the following:transmitting initial control information to tire apparatus;transmitting an initial system information unit to the apparatus.

19. The radio access node according to one of claims 14 to 18, wherein the control information comprises one bit indicative of whether the second FDRA mode is used by the radio access node for transmission of the at least one system information unit.

20. The radio access node according to one of claims 14 to 19. w herein the control information is scrambled by a specific temporary identifier in a case where the second FDRA mode is used by the radio access node for transmission of the at least one system information unit.

21. The radio access node according to one of claims 18 to 20, wherein the initial system information unit is transmitted within a part of the frequency resource according to the first FDRA mode.

22. The radio access node according to one of claims 15 to 21, the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform at least one of the following:receiving data from the apparatus on a physical uplink shared channel, PUSCH, using the second FDRA mode;transmitting data to the apparatus on a physical downlink shared channel, PDSCH, using the second FDRA mode.

23. The radio access node according to one of claims 18 to 22, wherein the initial system information unit comprises FDRA mode usage information which is indicative of a usage of the second FDRA mode in a coverage area of the radio access node.

24. The radio access node according to one of claims 14 to 23, the at least one memory further storing instructions that, when executed by the at least one processor, cause the radio access node to perform: transmitting the at least one system information unit to the apparatus, wherein the at least one system information unit is transmitted within a part of the frequency resource according to the first FDRA mode.

25. A method performed by a radio access node of a radio access network, the method comprising at least the following:transmitting control information to an apparatus, the control information comprising frequency' domain resource allocation, FDRA, mode information, wherein the FDRA mode information isindicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a first FDRA mode.

526. A non-transitory computer-readable medium comprising program instructions which, when executed by a radio access node of a radio access netw ork, cause the radio access node to perform at least the following:transmitting control information to an apparatus, the control information comprising frequency10 domain resource allocation, FDRA, mode information, wherein the FDRA mode information isindicative of whether a second FDRA mode is used by the radio access node for transmission of at least one system information unit, wherein, in the second FDRA mode, an at least partially different part of a frequency resource is used for transmission of the at least one system information unit compared to a First FDRA mode.15

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